You can with the PLC Omron hostlink Protocol communication, computers as PC PLC as a slave, you can read and write any PLC memory.
File list:
PoohPlcLink Published on web
...........................\DLL
...........................\...\PoohPlcLink.dll
...........................\Program Example
...........................\...............\ProjPoohPlcLink
...........................\...............\...............\ProjPoohPlcLink
...........................\...............\...............\...............\bin
...........................\...............\...............\...............\...\Debug
...........................\...............\...............\...............\...\.....\PoohPlcLink.dll
...........................\...............\...............\...............\...\.....\ProjPoohPlcLink.exe
...........................\...............\...............\...............\...\.....\ProjPoohPlcLink.pdb
...........................\...............\...............\...............\...\.....\ProjPoohPlcLink.vshost.exe
...........................\...............\...............\...............\...\.....\ProjPoohPlcLink.vshost.exe.manifest
...........................\...............\...............\...............\...\Release
...........................\...............\...............\...............\My Project
...........................\...............\...............\...............\..........\app.manifest
...........................\...............\...............\...............\..........\Application.Designer.vb
...........................\...............\...............\...............\..........\Application.myapp
...........................\...............\...............\...............\..........\AssemblyInfo.vb
...........................\...............\...............\...............\..........\licenses.licx
...........................\...............\...............\...............\..........\Resources.Designer.vb
...........................\...............\...............\...............\..........\Resources.resx
...........................\...............\...............\...............\..........\Settings.Designer.vb
...........................\...............\...............\...............\..........\Settings.settings
...........................\...............\...............\...............\obj
...........................\...............\...............\...............\...\Debug
...........................\...............\...............\...............\...\.....\TempPE
...........................\...............\...............\...............\...\.....\ProjPoohPlcLink.exe
...........................\...............\...............\...............\...\.....\projpoohplclink.exe.licenses
...........................\...............\...............\...............\...\.....\ProjPoohPlcLink.pdb
...........................\...............\...............\...............\...\.....\ProjPoohPlcLink.vbproj.FileListAbsolute.txt
...........................\...............\...............\...............\...\.....\ProjPoohPlcLink.vbproj.GenerateResource.Cache
...........................\...............\...............\...............\...\.....\ResolveAssemblyReference.cache
...........................\...............\...............\...............\...\.....\WindowsApplication1.frmFinsETN.resources
...........................\...............\...............\...............\...\.....\WindowsApplication1.frmFinsHostLink.resources
...........................\...............\...............\...............\...\.....\WindowsApplication1.Resources.resources
...........................\...............\...............\...............\...\Release
...........................\...............\...............\...............\frmFinsETN.Designer.vb
...........................\...............\...............\...............\frmFinsETN.resx
...........................\...............\...............\...............\frmFinsETN.vb
...........................\...............\...............\...............\frmFinsHostLink.Designer.vb
...........................\...............\...............\...............\frmFinsHostLink.resx
...........................\...............\...............\...............\frmFinsHostLink.vb
...........................\...............\...............\...............\PoohPlcLink.dll
...........................\...............\...............\...............\ProjPoohPlcLink.vbproj
...........................\...............\...............\...............\ProjPoohPlcLink.vbproj.user
...........................\...............\...............\ProjPoohPlcLink.sln
...........................\...............\...............\ProjPoohPlcLink.suo
...........................\Getting Start in VB_V140.doc
...........................\Version History V1.4.0.0.doc